<template>
  <div class="upload-container">
    <el-button :style="{background:color,borderColor:color}" icon="el-icon-upload" size="mini" type="primary" @click=" dialogVisible=true">上传图片
    </el-button>
    <el-dialog :visible.sync="dialogVisible" :append-to-body='true'>
      <el-upload
        :multiple="true"
        :file-list="fileList"
        :show-file-list="true"
        :on-remove="handleRemove"
        :on-success="handleSuccess"
        :before-upload="beforeUpload"
        class="editor-slide-upload"
        :action="actionPath"
        :data="postData"
        list-type="picture-card">
        <el-button size="small" type="primary">点击上传</el-button>
      </el-upload>
      <el-button @click="dialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="handleSubmit">确 定</el-button>
    </el-dialog>
  </div>
</template>

<script>
import { getQiniuToken } from '@/api/common'
import { guid } from '@/utils/index'

export default {
  name: 'EditorSlideUpload',
  props: {
    color: {
      type: String,
      default: '#1890ff'
    }
  },
  data() {
    return {
      dialogVisible: false,
      listObj: {},
      fileList: [],
      actionPath: '',
      baseUrl: '',
      postData: {}
    }
  },
  mounted() {
    getQiniuToken().then(response => {
      console.log(response);
      this.actionPath = response.data.uploadUrl
      this.baseUrl = response.data.baseUrl
      this.postData.token = response.data.token
    })
  },
  methods: {
    checkAllSuccess() {
      return Object.keys(this.listObj).every(item => this.listObj[item].hasSuccess)
    },
    handleSubmit() {
      const arr = Object.keys(this.listObj).map(v => this.listObj[v])
      if (!this.checkAllSuccess()) {
        this.$message('请等待所有图片上传成功 或 出现了网络问题，请刷新页面重新上传！')
        return
      }
      console.log(arr)
      this.$emit('successCBK', arr)
      this.listObj = {}
      this.fileList = []
      this.dialogVisible = false
    },
    handleSuccess(response, file) {
      const uid = file.uid
      const objKeyArr = Object.keys(this.listObj)
      for (let i = 0, len = objKeyArr.length; i < len; i++) {
        if (this.listObj[objKeyArr[i]].uid === uid) {
          this.listObj[objKeyArr[i]].url = this.baseUrl + '/' + response.key
          this.listObj[objKeyArr[i]].hasSuccess = true
          console.log(this.baseUrl + '/' + response.key);
          return
        }
      }
    },
    handleRemove(file) {
      const uid = file.uid
      const objKeyArr = Object.keys(this.listObj)
      for (let i = 0, len = objKeyArr.length; i < len; i++) {
        if (this.listObj[objKeyArr[i]].uid === uid) {
          delete this.listObj[objKeyArr[i]]
          return
        }
      }
    },
    beforeUpload(file) {
      const _self = this
      const _URL = window.URL || window.webkitURL
      const fileName = file.uid
      this.postData.key = guid() + '.' + file.type.split('/')[1]
      this.listObj[fileName] = {}
      const img = new Image()
      img.src = _URL.createObjectURL(file)
      // img.onload = function() {
      //   _self.listObj[fileName] = { hasSuccess: false, uid: file.uid, width: this.width, height: this.height }
      // }
      this.listObj[uid] = { hasSuccess: false, uid: file.uid, name: file.name, width: this.width, height: this.height }
      // return new Promise((resolve, reject) => {
      //   const img = new Image()
      //   img.src = _URL.createObjectURL(file)
      //   img.onload = function() {
      //     _self.listObj[fileName] = { hasSuccess: false, uid: file.uid, width: this.width, height: this.height }
      //   }
      //   resolve(true)
      // })
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss" scoped>
.editor-slide-upload {
  margin-bottom: 20px;
  ::v-deep .el-upload--picture-card {
    width: 100%;
  }
}
</style>
